Customer service agents making out in the halls, employee knife fights, and overflowing commodes are just some of the reasons listed in this flameout resignation letter for why customer service seems to suck so much sometimes. The author worked at a Hazlewood, MO call center for Convergys, one of the leading companies for outsourced call center support. Some of their clients include Comcast, Walmart, and SBC. They also used to do AOL’s.